CLI readme for npm package

[marcin-ogon]

Changes

Description of change here.

Checklist

• [ ] have tested my change
• [ ] updated relevant documentation
• [ ] Remove any/all console.logs I added
• [ ] eslint is not complaining
• [ ] have added myself to the contributors' list in the README
• [ ] for feature PRs: PR only includes one feature enhancement.

[worksofliam]

Hey @marcin-ogon !! Thanks for this super PR. I appreciate it!